Solvent Extraction of Iron(III) from Hydrochloric Acid Solutions Using N,N′‐Dimethyl‐N,N′‐diphenylmalonamide and N,N′‐Dimethyl‐N,N′‐diphenyltetradecylmalonamide

Costa, Maria Clara; Carvalho, Arsélio P.; Uryga, Agnieszka; Paiva, Ana Paula

doi:10.1081/sei-120024550

Cited by 36 publications

(26 citation statements)

References 55 publications

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“…Costa et al (10)(11)(12) have demonstrated that malonamide derivatives (N,N 0 -dimethyl-NN 0 -diphenylmalonamide, N,N 0 -dimethyl-NN 0 -diphenyltetradecylmalonamide and N,N 0 -dimethyl-N,N 0 -dibutylmalonamide) were efficient and selective extractants for the separation of iron(III) from acid chloride media. The iron(III) extraction depended on HCl concentration, and their efficiency is enhanced as the acid concentration in the aqueous phase increases.…”

Section: Solvent Extraction Of Iron(iii) From Chloride Solutions In Tmentioning

confidence: 98%

Solvent Extraction of Iron(III) From Chloride Solutions in the Presence of Copper(II) and Zinc(II) Using Hydrophobic Pyridyl Ketoximes

Parus

Wieszczycka

Olszanowski

2010

Separation Science and Technology

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In this work, oximes of 1-(2-pyridyl)tridekane-1-one and 1-(4-pyridyl)tridecane-1-one were used as model hydrophobic extractants for iron(III) from a chloride media. Both studied pyridyl ketoximes have the ability to extract iron(III) from chloride solutions. The highest degree of iron(III) extraction was observed for 1-(2-pyridyl)tridecane-1-one oxime. During extraction with 4-pyridyl ketoxime, a precipitated complex was observed, which has a disadvantageous effect for the extraction process. Iron(III) could be effectively stripped by 1% HCl from organic solution after extraction. Selectivity extractions from multielemental aqueous solutions containing iron(III) using 2-and 4-pyridyl ketoximes were also studied. The highest extraction percentage and good selectivity was observed for Cu 2þ from a solution containing 1.0 M Cl À with 1-(2-pyridyl)tridecane-1-one oxime. A scheme of separation of particular metal ions from mulielemental aqueous solutions was also proposed. The separation of metal ions is possible in three stages of extraction.

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Section: Solvent Extraction Of Iron(iii) From Chloride Solutions In Tmentioning

confidence: 98%

Solvent Extraction of Iron(III) From Chloride Solutions in the Presence of Copper(II) and Zinc(II) Using Hydrophobic Pyridyl Ketoximes

Parus

Wieszczycka

Olszanowski

2010

Separation Science and Technology

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“…N,N,N 0 ,N 0 -tetrahexylsuccinylamide (THSA) was used for extraction of U(VI) and Th(IV) ions from nitric acid media into n-dodecane [13].Wang et al studied solvent extraction of uranyl (II) ion with N,N 0 ,N 0 -tetrabutylsuccinylamide from nitric acid solution [14]. It is well known that extraction ability varies widely in terms of the nature of the alkyl groups on the diamide framework [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction of U(VI) by N,N-dimethyl-N′,N′-dioctylsuccinylamide and N,N-dimethyl-N′,N′-didecylsuccinylamide in cyclohexane

Cui

Yang

et al. 2016

NUCL SCI TECH

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The extraction of uranyl nitrate by novel extractants of N,N-dimethyl-N 0 ,N 0 -dioctylsuccinylamide (DMDOSA) and N,N-dimethyl-N 0 ,N 0 -didecylsuccinylamide (DMDDSA) from aqueous nitric/nitrate solutions was investigated. It was found both the concentration of HNO 3 and extractants had an effect on the U(VI) extraction distribution. The extraction mechanism was established, and stoichiometry of the main extracted species was confirmed to be UO 2 (NO 3 ) 2 Á2DMDOSA and UO 2 (NO 3 ) 2 Á 2DMDDSA, respectively. Both of the extraction reactions are exothermic. FTIR spectral study of the U(VI) extracted species was also made.

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“…Costa et al [16,17] have proposed the use of malonamides for the efficient and selective extraction of iron(III) from concentrated hydrochloric acid solutions. Until the present, three malonamide derivatives -N, [16,18,19] and N,N 0 -dimethyl-N,N 0 -dibutylmalonamide (DMDBMA) [20] -were synthesized and investigated regarding their adequacy to accomplish this aim.…”

Section: Introductionmentioning

confidence: 99%

“…The collected results suggested that DMDFMA and DMDF(T)MA extract iron(III) through a different mechanism, thus showing the important role of the chemical structure on the metal ion transfer reactions to the organic phase. For DMDFMA, an ion-pair mechanism involving iron (III) extraction as the chlorocomplex FeCl 4 2 seems to occur, [16] while for DMDF(T)MA [16] and DMDBMA [20] the solvation of FeCl 3 or HFeCl 4 appears to be the predominant iron(III) extraction pathway.…”

Section: Introductionmentioning

confidence: 99%

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The Solvent Extraction of Iron(III) from Chloride Solutions byN,N′‐Tetrasubstituted Malonamides: Structure‐Activity Relationships

Costa

Pêczek

Sadowski

et al. 2007

Solvent Extraction and Ion Exchange

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The extraction of iron(III) from chloride solutions has been investigated using N,N 0 -dimethyl-N,The main aim of this work was to investigate whether there is a relation between the chemical structure of malonamides and their iron(III) extraction behavior, and to try to understand the dependence of the metal extraction mechanism on the structural characteristics of the malonamides. The introduction of an alkyl chain on the central carbon atom of N,N 0 -dimethyl-N,N 0 -diphenyl skeleton malonamides increases the affinity of the organic derivatives for iron(III) at lower hydrochloric acid concentrations: the longer the alkyl chain, the lower the acidity of half of the extraction of iron(III) is. A similar behavior has been observed both for DMDCMA and DMDHMA when N,N 0 -dimethyl-N,N 0 -diphenylmalonamide (DMDFMA) is taken as a reference. The collected spectroscopic results point out that either the presence of a central alkyl chain on N,N 0 -dimethyl-N,N 0 -diphenyl skeleton malonamides or the replacement of the N,N 0 -diphenyl groups by dicyclohexyl-or di-n-hexyl ones, likely determines iron(III) extraction through a solvation pathway, also involving the extraction of HCl molecules.

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Solvent Extraction of Iron(III) from Hydrochloric Acid Solutions Using N,N′‐Dimethyl‐N,N′‐diphenylmalonamide and N,N′‐Dimethyl‐N,N′‐diphenyltetradecylmalonamide

Cited by 36 publications

References 55 publications

Solvent Extraction of Iron(III) From Chloride Solutions in the Presence of Copper(II) and Zinc(II) Using Hydrophobic Pyridyl Ketoximes

Solvent Extraction of Iron(III) From Chloride Solutions in the Presence of Copper(II) and Zinc(II) Using Hydrophobic Pyridyl Ketoximes

Solvent extraction of U(VI) by N,N-dimethyl-N′,N′-dioctylsuccinylamide and N,N-dimethyl-N′,N′-didecylsuccinylamide in cyclohexane

The Solvent Extraction of Iron(III) from Chloride Solutions byN,N′‐Tetrasubstituted Malonamides: Structure‐Activity Relationships

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